◎ 题干
Many students listened to the lecture, but I wondered how much work they took________.
[      ]
A. out 
B. up
C. off  
D. in
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Many students listened to the lecture, but I wondered how much work they took________. [ ]A. outB. up C. offD. in…”主要考查了你对  【介词和介词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。